Maritime archaeologist and historian Joel Cook joins the show to spin the tale of how traveling barbers almost coordinated an uprising that could have derailed the American Civil War. Plus, Rachel talks about a very delicious mutualism between humans and greater honeyguide birds, and Sara Kiley chimes in to talk about why rats might want to take selfies.The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our Facebook group or tweet at us!Click here to learn more about all of our stories! Links to Rachel's TikTok, Newsletter, Merch Store and More: https://linktr.ee/RachelFeltman Rachel now has a Patreon, too! Follow her for exclusive bonus content: https://www.patreon.com/RachelFeltmanLink to Jess' Twitch: https://www.twitch.tv/jesscapricorn--Follow our team on TwitterRachel Feltman: www.twitter.com/RachelFeltmanProduced by Jess Boddy: www.twitter.com/JessicaBoddyPopular Science: www.twitter.com/PopSciTheme music by Billy Cadden: https://open.spotify.com/artist/6LqT4DCuAXlBzX8XlNy4Wq?si=5VF2r2XiQoGepRsMTBsDAQ

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